公开(公告)号：US06835923B2

公开(公告)日：2004-12-28

申请号：US09987987

申请日：2001-11-16

Applicant: Tiina Hämäläinen ,  Henri Vähä-Ypyä ,  Risto Pirhonen ,  Vesa Peili

Inventor： Tiina Hämäläinen ,  Henri Vähä-Ypyä ,  Risto Pirhonen ,  Vesa Peili

IPC: G01J104

CPC classification number: G01V8/14 ,  H03K17/941

Abstract: The present invention relates to proximity sensors. It also relates to proximity sensors in electronic devices using lightguides. More specifically the invention relates to a simple self monitoring of optical proximity sensors. This can be achieved according to one embodiment of the present invention by a system of lightguides for the use in proximity sensor. The lightguide system comprises a transceiver lightguide to direct-transmitter to a predefined direction, and a receiver lightguide to direct transmitter light reflected from an object towards a receiver, where the transceiver and receiver lightguides comprise diffracting surfaces to direct a part of-the light from the transmitter as a self monitoring beam in a direction towards a receiver.

Abstract translation: 本发明涉及接近传感器。 它还涉及使用光导的电子设备中的接近传感器。 更具体地，本发明涉及光学接近传感器的简单自我监测。 这可以通过用于接近传感器的光导系统根据本发明的一个实施例来实现。 光导系统包括用于将发射器直接发射到预定方向的收发器光导和用于将从物体反射的发射器光引导到接收器的接收器光导，其中收发器和接收器光导包括衍射表面以将一部分光从 发射机作为朝向接收机的方向的自监视波束。

公开(公告)号：US06822215B2

公开(公告)日：2004-11-23

申请号：US10018203

申请日：2002-05-07

Applicant: Andreas Hensel

Inventor： Andreas Hensel

IPC: G01J104

CPC classification number: G01N21/783

Abstract: An optoelectronic sensor, which is based on optodes and with which, thanks to optode material that has been rendered reflective, virtually any angle for injecting the light into the optode material is feasible, is proposed. Thus, advantageously, a longer optical path is achieved than would be feasible in the case of total reflection. Thus greater measuring precision can be achieved. In the present case the optode material is a polymer, reflectivity being provided by introducing metal particles into the polymer. The light emitter and the light-sensitive sensors are an LED and photodiodes respectively. A plurality of optoelectronic sensors can be combined to form a gas sensor array.

Abstract translation: 提出了一种光电传感器，其基于光电二极管，并且由于已经被反射的光栅材料，实际上可以将光注入到光栅材料中的任何角度是可行的。 因此，有利地，实现比在全反射的情况下更可行的更长的光路。 因此可以实现更高的测量精度。 在目前情况下，光电材料是聚合物，反射率是通过将金属颗粒引入聚合物而提供的。 光发射器和感光传感器分别是LED和光电二极管。 可以组合多个光电传感器以形成气体传感器阵列。

公开(公告)号：US06787758B2

公开(公告)日：2004-09-07

申请号：US10121375

申请日：2002-04-12

Applicant: Paulo S. Tubel ,  Glynn Williams ,  Michael H. Johnson ,  John W. Harrell ,  Jeffrey J. Lembcke ,  Kurt A. Hickey ,  Nigel Leggett

Inventor： Paulo S. Tubel ,  Glynn Williams ,  Michael H. Johnson ,  John W. Harrell ,  Jeffrey J. Lembcke ,  Kurt A. Hickey ,  Nigel Leggett

IPC: G01J104

CPC classification number: E21B23/03 ,  E21B33/1275 ,  E21B37/06 ,  E21B41/0035 ,  E21B41/02 ,  E21B43/12 ,  E21B43/122 ,  E21B43/123 ,  E21B43/16 ,  E21B43/25 ,  E21B43/26 ,  E21B47/00 ,  E21B47/011 ,  E21B47/06 ,  E21B47/065 ,  E21B47/10 ,  E21B47/101 ,  E21B47/1015 ,  E21B47/102 ,  E21B47/123 ,  E21B49/00 ,  E21B49/006 ,  E21B49/08 ,  G01D5/268 ,  G01N21/31 ,  G01V1/226 ,  G01V1/52 ,  G01V11/002

Abstract: This invention provides a method for controlling production operations using fiber optic devices. An optical fiber carrying fiber-optic sensors is deployed downhole to provide information about downhole conditions. Parameters related to the chemicals being used for surface treatments are measured in real time and on-line, and these measured parameters are used to control the dosage of chemicals into the surface treatment system. The information is also used to control downhole devices that may be a packer, choke, sliding sleeve, perforating device, flow control valve, completion device, an anchor or any other device. Provision is also made for control of secondary recovery operations online using the downhole sensors to monitor the reservoir conditions. The present invention also provides a method of generating motive power in a wellbore utilizing optical energy. This can be done directly or indirectly, e.g., by first producing electrical energy that is then converted to another form of energy.

公开(公告)号：US06774353B2

公开(公告)日：2004-08-10

申请号：US10323153

申请日：2002-12-18

Applicant: Scott Caldwell ,  Robert McNair

Inventor： Scott Caldwell ,  Robert McNair

IPC: G01J104

CPC classification number: G01J1/4257

Abstract: A radial power feedback sensor senses the power output of a fiber optic bundle. The fiber optic bundle is arranged generally radially about an axis to carry radiative energy produced by a laser. A spacer is positioned within the fiber optic bundle such that the fiber optic bundle generally surrounds the spacer. The spacer serves to enable the radiative energy to pass therethrough. A photo detector is then disposed adjacent the spacer and is operable to output a signal in response to a measured intensity of the radiative energy passing through the spacer. Accordingly, due to the surrounding of the fiber optic bundle around the photo detector, a greater number of individual photo optic lines are exposed to the photo detector, thereby decreasing the variance between the measure output and the true output of the laser.

Abstract translation: 径向功率反馈传感器感测光纤束的功率输出。 光纤束大致围绕轴径向放置，以承载由激光产生的辐射能。 间隔件定位在光纤束内，使得光纤束通常围绕隔离物。 间隔物用于使辐射能量通过。 然后将光检测器设置在间隔物附近，并且可操作以响应于通过间隔物的辐射能的测量强度来输出信号。 因此，由于光检测器周围的光纤束周围，更多数量的单独的光电路线暴露于光电检测器，从而减小了测量输出和激光器真实输出之间的差异。

公开(公告)号：US06683297B2

公开(公告)日：2004-01-27

申请号：US10457845

申请日：2003-06-10

Applicant: Whitten Lee Schulz ,  Eric Udd

Inventor： Whitten Lee Schulz ,  Eric Udd

IPC: G01J104

CPC classification number: G01N21/774 ,  G01M3/165 ,  G01M3/38 ,  G01N2021/7723 ,  G02B6/022

Abstract: Fiber grating environmental measurement systems are comprised of sensors that are configured to respond to changes in moisture or chemical content of the surrounding medium through the action of coatings and plates inducing strain that is measured. These sensors can also be used to monitor the interior of bonds for degradation due to aging, cracking, or chemical attack. Means to multiplex these sensors at high speed and with high sensitivity can be accomplished by using spectral filters placed to correspond to each fiber grating environmental sensor. By forming networks of spectral elements and using wavelength division multiplexing arrays of fiber grating sensors may be processed in a single fiber line allowing distributed high sensitivity, high bandwidth fiber optic grating environmental sensor systems to be realized.

Abstract translation: 光纤光栅环境测量系统由传感器组成，传感器被配置为通过涂层和板的作用来响应周围介质的湿度或化学成分的变化，诱导测量的应变。 这些传感器也可用于监测由于老化，开裂或化学侵蚀而导致的结合物内部的退化。 可以通过使用放置为对应于每个光纤光栅环境传感器的光谱滤波器来实现以高速和高灵敏度复用这些传感器的手段。 通过形成光谱元件的网络并使用光纤光栅传感器的波分复用阵列可以在单个光纤线路中进行处理，从而实现分布式高灵敏度，高带宽光纤光栅环境传感器系统。

公开(公告)号：US06576888B2

公开(公告)日：2003-06-10

申请号：US09931164

申请日：2001-08-17

Applicant: Yasushi Fujimura ,  Yuuji Kida

Inventor： Yasushi Fujimura ,  Yuuji Kida

IPC: G01J104

CPC classification number: G02B6/4214 ,  G02B6/421 ,  G02B6/4224 ,  G02B6/4228 ,  G02B6/423 ,  G02B6/4243 ,  G02B6/4245 ,  G02B6/4248 ,  G02B6/4265 ,  G02B6/4274 ,  G02B6/4285

Abstract: An light receiving module 2 consists of a mount substrate 20, an optical fiber 18, a semiconductor photodetector 22, a mount member 26, and a signal processing semiconductor element 28. The mount member 26 has a pair of arm portions and a joint portion. Each arm portion extends along a first direction. The joint portion extends along a direction perpendicular to the first direction and connects the pair of arm portions. The optical fiber 18 has a first end and a second end. The semiconductor photodetector 22 has a light incidence surface optically coupled to the first end of the optical fiber 18, and a light receiving element part. The mount substrate 20 is placed between the pair of arm portions of the mount member 26 and carries the optical fiber 18 and the semiconductor photodetector 20. The signal processing semiconductor element 28 is placed on the mount member 26 and processes a signal from the semiconductor photodetector 22.

Abstract translation: 光接收模块2由安装基板20，光纤18，半导体光电检测器22，安装构件26和信号处理半导体元件28组成。安装构件26具有一对臂部和接合部。 每个臂部分沿着第一方向延伸。 接头部分沿垂直于第一方向的方向延伸，并连接一对臂部。 光纤18具有第一端和第二端。 半导体光电检测器22具有光耦合到光纤18的第一端的光入射表面和光接收元件部分。 安装基板20被放置在安装构件26的一对臂部之间，并且承载光纤18和半导体光电检测器20.信号处理半导体元件28被放置在安装构件26上，并处理来自半导体光电检测器 22。

公开(公告)号：US06576887B2

公开(公告)日：2003-06-10

申请号：US09930371

申请日：2001-08-15

Applicant: Leland R. Whitney ,  Gary T. Boyd ,  Keith M. Kotchick ,  Kenneth A. Epstein ,  Sanford Cobb, Jr. ,  Philip E Watson ,  David J. Lamb ,  Mark E. Gardiner

Inventor： Leland R. Whitney ,  Gary T. Boyd ,  Keith M. Kotchick ,  Kenneth A. Epstein ,  Sanford Cobb, Jr. ,  Philip E Watson ,  David J. Lamb ,  Mark E. Gardiner

IPC: G01J104

CPC classification number: G02B6/0038 ,  G02B6/0046 ,  G02B6/0065 ,  Y10S385/901

Abstract: A light guide including a light guide body having a light re-directing side positioned opposite from a light output side. A plurality of elongate prisms are located adjacent the light output side of the light guide body. The prisms extend side-by-side relative to one another along lengths. The prisms include upper edges defining heights of the prisms. The upper edges extend along the lengths of the prisms. Each upper edge includes a plurality of edge segments having different magnitudes of slope. The light guide also includes a plurality of light extraction structures located adjacent the light re-directing side of the light guide body for reflecting light toward the light output side. The light extraction structures include elongated projections each having a plateau segment and first and second facets. The elongated projections are separated by lands that are recessed relative to the plateau segments. The first and second facets extend from the plateau segments to the lands.

Abstract translation: 一种导光体，其具有导光体，该导光体具有与光输出侧相对的光重定向侧。 多个细长棱镜位于导光体的光输出侧附近。 棱镜沿着长度相对于彼此并排延伸。 棱镜包括限定棱镜高度的上边缘。 上边缘沿着棱镜的长度延伸。 每个上边缘包括具有不同幅度的斜率的多个边缘段。 光导还包括多个光导提取结构，其位于导光体的光再导向侧附近，用于将光反射到光输出侧。 光提取结构包括每个具有平台段和第一和第二小平面的细长突起。 细长的凸起由相对于平台段凹陷的平台隔开。 第一和第二面从高原段延伸到陆地。

公开(公告)号：US06437321B1

公开(公告)日：2002-08-20

申请号：US09590526

申请日：2000-06-08

Applicant: Charles E. Greninger

Inventor： Charles E. Greninger

IPC: G01J104

CPC classification number: G02B26/06 ,  G01J9/00 ,  G02B27/0025

Abstract: An optical correction system for correcting thermally-induced wavefront distortions in an optical signal emanating from a crystal or other form of optical device/system. An optical output signal from the thermally sensitive optical device/system is fed to a beamsplitter, which produces a reflected optical signal and a refracted optical signal containing thermally-induced distortion. The refracted signal is fed to a wavefront distortion sensor which produces an output signal representative of the thermally-induced distortion. The output of the wavefront distortion sensor is fed to a computational device which determines the necessary degree of error correction to compensate for the thermally-induced optical distortion. A stress application device receives the output of the computational device and generates an electrical signal in accordance therewith which is then used to control a force applicator in physical contact with the crystal. The force applicator applies a precise degree of stress (either tensile or compressive) to the crystal to remove or substantially reduce the thermally-induced optical distortion.

Abstract translation: 一种光学校正系统，用于校正从晶体或其他形式的光学装置/系统发出的光信号中的热诱导波前失真。 来自热敏光学设备/系统的光输出信号被馈送到分束器，其产生反射的光信号和包含热致畸变的折射光信号。 折射信号被馈送到波前失真传感器，其产生表示热诱导失真的输出信号。 波前失真传感器的输出被馈送到计算设备，该计算设备确定必要的纠错程度以补偿热诱导的光学失真。 应力施加装置接收计算装置的输出并产生与之相关的电信号，然后该电信号用于控制与晶体物理接触的施力器。 力施加器将精确的应力（拉伸或压缩）施加到晶体以去除或基本上减少热诱导的光学失真。

公开(公告)号：US06407375B1

公开(公告)日：2002-06-18

申请号：US09353674

申请日：1999-07-15

Applicant: Mark E. O Loughlin ,  Craig T. Walters ,  Patrick M. Kenney ,  Steven M. Toller ,  Jeff L. Dulaney

Inventor： Mark E. O Loughlin ,  Craig T. Walters ,  Patrick M. Kenney ,  Steven M. Toller ,  Jeff L. Dulaney

IPC: G01J104

CPC classification number: G01J1/4228 ,  G01J1/04 ,  G01J1/0425

Abstract: A monitor of a plurality of optical signals utilizing fiber optics which form an array. An image of the array is captured and the captured image is processed for detecting a quality of an optical signal such as the presence, absence, intensity, wavelength, or other quality of the optical signal. A method of monitoring a plurality of optical signals by capturing a plurality of optical signals from an array of signals and detecting a quality of at least one optical signal is also disclosed.

Abstract translation: 利用形成阵列的光纤的多个光信号的监视器。 捕获阵列的图像，并且处理捕获的图像以检测诸如光信号的存在，不存在，强度，波长或其他质量的光信号的质量。 还公开了一种通过从信号阵列捕获多个光信号并检测至少一个光信号的质量来监测多个光信号的方法。

公开(公告)号：US06365891B1

公开(公告)日：2002-04-02

申请号：US09606771

申请日：2000-06-29

Applicant: Craig W. Hodgson ,  Jefferson L. Wagener ,  Michel J. F. Digonnet ,  H. John Shaw

Inventor： Craig W. Hodgson ,  Jefferson L. Wagener ,  Michel J. F. Digonnet ,  H. John Shaw

IPC: G01J104

CPC classification number: H04B10/2939 ,  G01D5/35383 ,  G01H9/004

Abstract: The present invention significantly improves the signal to noise ratio (SNR) in a passive optical array comprising sensors located in rungs between a distribution bus and a return bus. Erbium-doped optical fiber amplifiers are included in the buses proximate to each rung coupling to offset the coupler splitting losses. The gains of the amplifiers are selected to offset losses due to the couplings. The overall SNR can be maintained without significant degradation even for large numbers of sensors. In one aspect of the present invention, the amplifiers are located along the distribution and return buses directly after the couplers, except for the last coupler. In a second aspect, the amplifiers are located directly before each coupler. The optical amplifiers preferably are made of short lengths of erbium-doped fiber spliced into the distribution and return buses. Improvements can be made to the SNR when the distribution bus coupling ratios are set at optimal values. The value of the optimal coupling ratio depends upon the amplifier configuration, the excess loss and other configuration parameters. In preferred embodiments, sensors are grouped into parallel configurations in the rungs between the distribution and return buses to increase the number of sensors without a corresponding increase in the number of amplifiers and with an improvement in system performance. The number of sensors per rung is optimized to provide a low noise figure (NF) or a high SNR for each sensor in the array within a reasonable pump power budget.

Abstract translation: 本发明显着地改善了包括位于分配总线和返回总线之间的梯级中的传感器的无源光学阵列中的信噪比（SNR）。 铒掺杂光纤放大器包括在靠近每个梯级耦合的总线中，以抵消耦合器分裂损耗。 选择放大器的增益来抵消由于耦合造成的损耗。 即使对于大量的传感器也可以保持整体SNR而没有显着的降低。 在本发明的一个方面，除了最后一个耦合器之外，放大器沿着分配和返回总线直接位于耦合器之后。 在第二方面，放大器直接位于每个耦合器之前。 光放大器优选地由拼接到分配和返回总线中的短长度的掺铒光纤制成。 当分配总线耦合比被设置为最佳值时，可以对SNR进行改进。 最佳耦合比的值取决于放大器配置，过剩损耗和其他配置参数。 在优选实施例中，传感器在分布和返回总线之间的梯级中被分组成并行配置，以增加传感器的数量，而不增加放大器的数量并改善系统性能。 每个梯级的传感器数量被优化，以在合理的泵功率预算内为阵列中的每个传感器提供低噪声系数（NF）或高SNR。